1993/05/15 by David Wonnacott, B. J. Kellett, D. J. Stickland · 3 citations
Physics and Astronomy · Engineering · #Stellar, planetary, and galactic studies #Astronomical Observations and Instrumentation #Astronomy and Astrophysical Research #Physics #White dwarf #Sirius #Astrophysics #Extreme ultraviolet lithography #Astronomy #Variable star #Orbital period #Supernova #Sky #Stars #Optics
paper · pdf · doi:10.1093/mnras/262.2.277
openalex publication_date 1993/05/15 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/14
The system IK Peg has been known to be a binary for over 60 years but the secondary has never been identified. The detection of this system in the British Wide Field Camera All-Sky Survey in the EUV has enabled the secondary to be positively identified as a white dwarf. Fits to EUV survey data, the first IUE spectrum, and archival X-ray data indicate that the system contains a high-mass(~1 M⊙) white dwarf and that it is very close to edge-on. The evolutionary status of this system is discussed; it is shown to be the result of a common-envelope phase, and it is expected to evolve into a Type I supernova or a cataclysmic variable.